Finding the Fourth Proportional to 9,342.70, 12,892.91 and 5,364.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,342.70 : 12,892.91 = 5,364.05 : x
2. Step 2: Convert to fraction form
   9,342.70/12,892.91 = 5,364.05/x
3. Step 3: Cross multiply
   9,342.70x = 12,892.91 × 5,364.05
4. Step 4: Simplify right side
   9,342.70x = 69,158,213.89
5. Step 5: Solve for x
   x = 69,158,213.89/9,342.70
6. Step 6: Final answer
   x = 7,402.38